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diapedesis

[dahy-uh-pi-dee-sis]
noun Physiology.
  1. the passage of blood cells, especially leukocytes, through the unruptured walls of the capillaries into the tissues.
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Origin of diapedesis

1615–25; < New Latin < Greek diapḗdēsis a leaping through, equivalent to diapēdē- (verbid stem of diapēdân to leap through) + -sis -sis
Related formsdi·a·pe·det·ic [dahy-uh-pi-det-ik] /ˌdaɪ ə pɪˈdɛt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for diapedesis

diapedesis

noun
  1. the passage of blood cells through the unruptured wall of a blood vessel into the surrounding tissues
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Derived Formsdiapedetic (ˌdaɪəpəˈdɛtɪk), adjective

Word Origin

C17: New Latin, from Greek: a leaping through, from diapēdan to spring through, from dia- + pēdan to leap
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

diapedesis in Medicine

diapedesis

(dī′ə-pĭ-dēsĭs)
n.
  1. The movement or passage of blood cells, especially white blood cells, through intact capillary walls into surrounding body tissue.migration
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.